com.haulmont.cuba.gui.executors

Class BackgroundTaskWrapper<T,V>

java.lang.Object

com.haulmont.cuba.gui.executors.BackgroundTaskWrapper<T,V>

public class BackgroundTaskWrapper<T,V>
extends java.lang.Object

Provides simple API for cases when the same type of background task gets started, restarted and cancelled repetitively.

See Also:

BackgroundWorker

Constructor Summary

Constructors

Constructor and Description
BackgroundTaskWrapper()
BackgroundTaskWrapper(BackgroundTask<T,V> task)

Method Summary

Modifier and Type	Method and Description
void	cancel() Cancel running task if there is any.
V	getResult() If there is running task, block until its completion and return result.
void	restart() Cancel running task if there is at the moment.
void	restart(BackgroundTask<T,V> task) Cancel running task if there is at the moment.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BackgroundTaskWrapper

public BackgroundTaskWrapper(@Nullable
                             BackgroundTask<T,V> task)

BackgroundTaskWrapper

public BackgroundTaskWrapper()

Method Detail

restart

public void restart()

Cancel running task if there is at the moment. Launch it again.

restart

public void restart(BackgroundTask<T,V> task)

Cancel running task if there is at the moment. Launch new task specified as parameter.

Parameters:

task - task to start, also will be saved for future restarts

getResult

@Nullable
public V getResult()

If there is running task, block until its completion and return result.

Returns:

last task's result or null if no tasks were run yet

cancel

public void cancel()

Cancel running task if there is any.